package com.leyou.mapper;

import com.leyou.item.pojo.Brand;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;

/**
 * @author 刘智博
 * @date 2022/2/25
 */

public interface BrandMapper  extends Mapper<Brand> {
    /**
     * 新增商品分类和品牌中间表数据
     * @param cid 商品分类id
     * @param bid 品牌id
     * @return
     */
    @Insert("INSERT INTO tb_category_brand(category_id, brand_id) VALUES (#{cid},#{bid})")
    int insertCategoryAndBrand (@Param("cid") Long cid, @Param("bid") Long bid);

    @Update("UPDATE tb_category_brand SET category_id = #{cid} where brand_id = #{bid}" )
    void updateCategoryBrand(@Param("cid") Long categoryId, @Param("bid") Long id);

    @Select("SELECT b.* FROM tb_brand b LEFT JOIN tb_category_brand cb ON b.id = cb.brand_id WHERE cb.category_id = #{cid}")
    List<Brand> queryByCategoryId(Long cid);
}
